PRODUCT PERFORMANCE
Frost Cushion will support up to 1 meter (39”) of fresh concrete. However, because of its engineered folding-action design using alternating and slightly curved legs, it will react to subgrade uplift by deforming and collapsing at a much lower stress than “solid” void form products. It is therefore an excellent choice for protecting grade beams under lighter wood frame or metal structures. It is more easily compressed when soil swell occurs under buildings and other structures, reducing uplift stress and protecting foundations, slabs and buildings from damage. Frost Cushion is not biodegradable and has no pest nutrient value.
FROST CUSHION is manufactured from closed cell expanded polystyrene (EPS). It was designed specifically to be used under concrete grade beams to compensate for frost and moisture-induced swelling of underlying soils that might otherwise lift or fracture concrete foundations. Due to its closed cell structure, it will not collapse due to water absorption and resists soil movement into spaces below the concrete. FROST CUSHION has excellent resistance to freeze/thaw because of its low moisture absorption properties.
Frost Cushion is available in the following standard sizes:
| THICKNESS | NOMINAL WIDTHS* | LENTHS |
| 100 mm (4”) | 200 mm (8”) | 2440 mm (8’) |
| 250 mm (10”) | ||
| 300 mm (12”) | ||
| 1220 mm (48”) | ||
| 150 mm (6”) | 200 mm (8”) | 2440 mm (8’) |
| 250 mm (10”) | ||
| 300 mm (12”) | ||
| 1220 mm (48”) |
* Unless otherwise specified at time of purchase, FROST CUSHION is supplied 5 mm (1/4”) narrower than stated width, in order to facilitate placement inside standard formwork.
